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<FONT color="green">001</FONT>    package metaface.client;<a name="line.1"></a>
<FONT color="green">002</FONT>    import java.io.*;<a name="line.2"></a>
<FONT color="green">003</FONT>    import java.awt.*;<a name="line.3"></a>
<FONT color="green">004</FONT>    import java.awt.geom.*;<a name="line.4"></a>
<FONT color="green">005</FONT>    import javax.sound.sampled.*;<a name="line.5"></a>
<FONT color="green">006</FONT>    import javax.swing.*;<a name="line.6"></a>
<FONT color="green">007</FONT>    import java.awt.event.*;<a name="line.7"></a>
<FONT color="green">008</FONT>    import java.util.*;<a name="line.8"></a>
<FONT color="green">009</FONT>    import netscape.javascript.*;<a name="line.9"></a>
<FONT color="green">010</FONT>    import java.net.*;<a name="line.10"></a>
<FONT color="green">011</FONT>    import metaface.mpeg4.*;<a name="line.11"></a>
<FONT color="green">012</FONT>    import metaface.interaction.*;<a name="line.12"></a>
<FONT color="green">013</FONT>    import metaface.embodiment.*;<a name="line.13"></a>
<FONT color="green">014</FONT>    import metaface.dsp.*;<a name="line.14"></a>
<FONT color="green">015</FONT>    <a name="line.15"></a>
<FONT color="green">016</FONT>    /**<a name="line.16"></a>
<FONT color="green">017</FONT>     *  This class implements the client-side (server free) framework design.<a name="line.17"></a>
<FONT color="green">018</FONT>     *  Although the MetaFace framework was designed for use within Internet<a name="line.18"></a>
<FONT color="green">019</FONT>     *  websites, it is not uncommon for websites to be viewed offline, on a client<a name="line.19"></a>
<FONT color="green">020</FONT>     *  machine. For example, consider the Java API documentation available from the<a name="line.20"></a>
<FONT color="green">021</FONT>     *  Sun website . Since the information is static and Java developers are<a name="line.21"></a>
<FONT color="green">022</FONT>     *  constantly consulting the documentation web pages, it is possible to<a name="line.22"></a>
<FONT color="green">023</FONT>     *  download what is essentially a website. This website can then be viewed<a name="line.23"></a>
<FONT color="green">024</FONT>     *  using a web browser, by accessing the file system rather than an Internet<a name="line.24"></a>
<FONT color="green">025</FONT>     *  web server.<a name="line.25"></a>
<FONT color="green">026</FONT>     *<a name="line.26"></a>
<FONT color="green">027</FONT>     *@author     Simon Beard <a name="line.27"></a>
<FONT color="green">028</FONT>     *@version    1.0<a name="line.28"></a>
<FONT color="green">029</FONT>     */<a name="line.29"></a>
<FONT color="green">030</FONT>    public class MetaFaceIndependentClient extends MetaFaceClient {<a name="line.30"></a>
<FONT color="green">031</FONT>            private Thread thread;<a name="line.31"></a>
<FONT color="green">032</FONT>            private boolean exit;<a name="line.32"></a>
<FONT color="green">033</FONT>            private VHMLOutputReader vhmloutputreader;<a name="line.33"></a>
<FONT color="green">034</FONT>            private InteractionManager im;<a name="line.34"></a>
<FONT color="green">035</FONT>            private DMTLParser dmtlparser;<a name="line.35"></a>
<FONT color="green">036</FONT>    <a name="line.36"></a>
<FONT color="green">037</FONT>    <a name="line.37"></a>
<FONT color="green">038</FONT>            /**<a name="line.38"></a>
<FONT color="green">039</FONT>             *  Creates new client that does not use a server connection<a name="line.39"></a>
<FONT color="green">040</FONT>             *<a name="line.40"></a>
<FONT color="green">041</FONT>             *@param  dsp          The TTS DSP to be used by the client when producing<a name="line.41"></a>
<FONT color="green">042</FONT>             *      speech audio<a name="line.42"></a>
<FONT color="green">043</FONT>             *@param  drawingarea  The MPEG-4 face drawing area<a name="line.43"></a>
<FONT color="green">044</FONT>             *@param  window       The JSObject window to access the web browser<a name="line.44"></a>
<FONT color="green">045</FONT>             *@param  ib           The idle behaviour class for animating the character<a name="line.45"></a>
<FONT color="green">046</FONT>             */<a name="line.46"></a>
<FONT color="green">047</FONT>            public MetaFaceIndependentClient(DigitalSignalProcessor dsp, DrawingArea drawingarea, JSObject window, IdleBehaviour ib) {<a name="line.47"></a>
<FONT color="green">048</FONT>                    super(dsp, drawingarea, window, ib);<a name="line.48"></a>
<FONT color="green">049</FONT>                    exit = false;<a name="line.49"></a>
<FONT color="green">050</FONT>                    thread = new Thread(this);<a name="line.50"></a>
<FONT color="green">051</FONT>                    this.start();<a name="line.51"></a>
<FONT color="green">052</FONT>            }<a name="line.52"></a>
<FONT color="green">053</FONT>    <a name="line.53"></a>
<FONT color="green">054</FONT>    <a name="line.54"></a>
<FONT color="green">055</FONT>            /**<a name="line.55"></a>
<FONT color="green">056</FONT>             *  Initialises the interaction manager with DMTL files<a name="line.56"></a>
<FONT color="green">057</FONT>             *<a name="line.57"></a>
<FONT color="green">058</FONT>             *@param  files         The DMTL files to be used as a knowledge base<a name="line.58"></a>
<FONT color="green">059</FONT>             *@param  vhmlfilepath  The path to VHML files refered to in the DMTL files<a name="line.59"></a>
<FONT color="green">060</FONT>             */<a name="line.60"></a>
<FONT color="green">061</FONT>            public synchronized void initialiseInteractionManager(Vector files, String vhmlfilepath) {<a name="line.61"></a>
<FONT color="green">062</FONT>                    int i;<a name="line.62"></a>
<FONT color="green">063</FONT>                    Vector kb;<a name="line.63"></a>
<FONT color="green">064</FONT>                    im = new InteractionManager();<a name="line.64"></a>
<FONT color="green">065</FONT>                    dmtlparser = new DMTLParser(files);<a name="line.65"></a>
<FONT color="green">066</FONT>                    kb = dmtlparser.getKnowledgeBases();<a name="line.66"></a>
<FONT color="green">067</FONT>                    for (i = 0; i &lt; kb.size(); i++) {<a name="line.67"></a>
<FONT color="green">068</FONT>                            im.addKnowledgeBase((KnowledgeBase) kb.elementAt(i));<a name="line.68"></a>
<FONT color="green">069</FONT>                    }<a name="line.69"></a>
<FONT color="green">070</FONT>                    im.setBasePath(vhmlfilepath);<a name="line.70"></a>
<FONT color="green">071</FONT>            }<a name="line.71"></a>
<FONT color="green">072</FONT>    <a name="line.72"></a>
<FONT color="green">073</FONT>    <a name="line.73"></a>
<FONT color="green">074</FONT>            /**<a name="line.74"></a>
<FONT color="green">075</FONT>             *  Initialises the interaction manager with DMTL files<a name="line.75"></a>
<FONT color="green">076</FONT>             *<a name="line.76"></a>
<FONT color="green">077</FONT>             *@param  parser        The DMTL parser to be used in the knowledge base<a name="line.77"></a>
<FONT color="green">078</FONT>             *@param  vhmlfilepath  The path to VHML files refered to in the DMTL files<a name="line.78"></a>
<FONT color="green">079</FONT>             */<a name="line.79"></a>
<FONT color="green">080</FONT>            public synchronized void initialiseInteractionManager(DMTLParser parser, String vhmlfilepath) {<a name="line.80"></a>
<FONT color="green">081</FONT>                    int i;<a name="line.81"></a>
<FONT color="green">082</FONT>                    Vector kb;<a name="line.82"></a>
<FONT color="green">083</FONT>                    im = new InteractionManager();<a name="line.83"></a>
<FONT color="green">084</FONT>                    kb = parser.getKnowledgeBases();<a name="line.84"></a>
<FONT color="green">085</FONT>                    for (i = 0; i &lt; kb.size(); i++) {<a name="line.85"></a>
<FONT color="green">086</FONT>                            im.addKnowledgeBase((KnowledgeBase) kb.elementAt(i));<a name="line.86"></a>
<FONT color="green">087</FONT>                    }<a name="line.87"></a>
<FONT color="green">088</FONT>                    im.setBasePath(vhmlfilepath);<a name="line.88"></a>
<FONT color="green">089</FONT>            }<a name="line.89"></a>
<FONT color="green">090</FONT>    <a name="line.90"></a>
<FONT color="green">091</FONT>    <a name="line.91"></a>
<FONT color="green">092</FONT>            /**<a name="line.92"></a>
<FONT color="green">093</FONT>             *  User stimulus has been recieved and this method is called. Usually to<a name="line.93"></a>
<FONT color="green">094</FONT>             *  process natural language or hypertext interaction stimulus<a name="line.94"></a>
<FONT color="green">095</FONT>             *<a name="line.95"></a>
<FONT color="green">096</FONT>             *@param  usertext  The stimulus<a name="line.96"></a>
<FONT color="green">097</FONT>             */<a name="line.97"></a>
<FONT color="green">098</FONT>            public synchronized void processUserStimulus(String usertext) {<a name="line.98"></a>
<FONT color="green">099</FONT>                    String response;<a name="line.99"></a>
<FONT color="green">100</FONT>                    Vector faps;<a name="line.100"></a>
<FONT color="green">101</FONT>                    Vector phonemes;<a name="line.101"></a>
<FONT color="green">102</FONT>                    String target;<a name="line.102"></a>
<FONT color="green">103</FONT>                    String url;<a name="line.103"></a>
<FONT color="green">104</FONT>                    String text;<a name="line.104"></a>
<FONT color="green">105</FONT>                    Hashtable browserupdate;<a name="line.105"></a>
<FONT color="green">106</FONT>                    Enumeration keys;<a name="line.106"></a>
<FONT color="green">107</FONT>                    response = im.processUserStimulus(usertext);<a name="line.107"></a>
<FONT color="green">108</FONT>    <a name="line.108"></a>
<FONT color="green">109</FONT>                    if (response != null) {<a name="line.109"></a>
<FONT color="green">110</FONT>    <a name="line.110"></a>
<FONT color="green">111</FONT>                            //Process the response file (a VHML Ouput file)<a name="line.111"></a>
<FONT color="green">112</FONT>                            vhmloutputreader = new VHMLOutputReader(response);<a name="line.112"></a>
<FONT color="green">113</FONT>    <a name="line.113"></a>
<FONT color="green">114</FONT>                            //Get the FAPs, phonemes, URLs, and text<a name="line.114"></a>
<FONT color="green">115</FONT>                            faps = vhmloutputreader.getFrames();<a name="line.115"></a>
<FONT color="green">116</FONT>                            phonemes = vhmloutputreader.getPhonemes();<a name="line.116"></a>
<FONT color="green">117</FONT>                            browserupdate = vhmloutputreader.getBrowserUpdates();<a name="line.117"></a>
<FONT color="green">118</FONT>                            text = vhmloutputreader.getText();<a name="line.118"></a>
<FONT color="green">119</FONT>                            setSpeechText(text);<a name="line.119"></a>
<FONT color="green">120</FONT>    <a name="line.120"></a>
<FONT color="green">121</FONT>                            //Reset ECA<a name="line.121"></a>
<FONT color="green">122</FONT>                            stopClient();<a name="line.122"></a>
<FONT color="green">123</FONT>                            toNeutralPosition(25);<a name="line.123"></a>
<FONT color="green">124</FONT>                            addAudioSilence(1000);<a name="line.124"></a>
<FONT color="green">125</FONT>    <a name="line.125"></a>
<FONT color="green">126</FONT>                            //Add data to buffers<a name="line.126"></a>
<FONT color="green">127</FONT>                            addFramesToBuffer(faps);<a name="line.127"></a>
<FONT color="green">128</FONT>                            addPhonemesToBuffer(phonemes);<a name="line.128"></a>
<FONT color="green">129</FONT>                            playAudio();<a name="line.129"></a>
<FONT color="green">130</FONT>                            renderAnimation();<a name="line.130"></a>
<FONT color="green">131</FONT>    <a name="line.131"></a>
<FONT color="green">132</FONT>                            //Display URLs<a name="line.132"></a>
<FONT color="green">133</FONT>                            keys = browserupdate.keys();<a name="line.133"></a>
<FONT color="green">134</FONT>                            while (keys.hasMoreElements()) {<a name="line.134"></a>
<FONT color="green">135</FONT>                                    target = (String) (keys.nextElement());<a name="line.135"></a>
<FONT color="green">136</FONT>                                    url = (String) (browserupdate.get(target));<a name="line.136"></a>
<FONT color="green">137</FONT>                                    displayHTML(target, url);<a name="line.137"></a>
<FONT color="green">138</FONT>                            }<a name="line.138"></a>
<FONT color="green">139</FONT>    <a name="line.139"></a>
<FONT color="green">140</FONT>                            //Transition to neutral position<a name="line.140"></a>
<FONT color="green">141</FONT>                            toNeutralPosition(25);<a name="line.141"></a>
<FONT color="green">142</FONT>                            addAudioSilence(1000);<a name="line.142"></a>
<FONT color="green">143</FONT>                    }<a name="line.143"></a>
<FONT color="green">144</FONT>            }<a name="line.144"></a>
<FONT color="green">145</FONT>    <a name="line.145"></a>
<FONT color="green">146</FONT>    <a name="line.146"></a>
<FONT color="green">147</FONT>            /**<a name="line.147"></a>
<FONT color="green">148</FONT>             *  This method is called when the client exits<a name="line.148"></a>
<FONT color="green">149</FONT>             */<a name="line.149"></a>
<FONT color="green">150</FONT>            public synchronized void exit() {<a name="line.150"></a>
<FONT color="green">151</FONT>                    exit = true;<a name="line.151"></a>
<FONT color="green">152</FONT>            }<a name="line.152"></a>
<FONT color="green">153</FONT>    <a name="line.153"></a>
<FONT color="green">154</FONT>    <a name="line.154"></a>
<FONT color="green">155</FONT>            /**<a name="line.155"></a>
<FONT color="green">156</FONT>             *  Main processing method for the MetaFaceIndependentClient object. Rendering<a name="line.156"></a>
<FONT color="green">157</FONT>             *  and polling is conducted by a thread.<a name="line.157"></a>
<FONT color="green">158</FONT>             */<a name="line.158"></a>
<FONT color="green">159</FONT>            public void run() {<a name="line.159"></a>
<FONT color="green">160</FONT>                    while (!exit) {<a name="line.160"></a>
<FONT color="green">161</FONT>    <a name="line.161"></a>
<FONT color="green">162</FONT>                            //Check for browser changes<a name="line.162"></a>
<FONT color="green">163</FONT>                            pollWebPages();<a name="line.163"></a>
<FONT color="green">164</FONT>                            <a name="line.164"></a>
<FONT color="green">165</FONT>                            //Play speech audio from phoneme buffer<a name="line.165"></a>
<FONT color="green">166</FONT>                            playAudio();<a name="line.166"></a>
<FONT color="green">167</FONT>                            <a name="line.167"></a>
<FONT color="green">168</FONT>                            //Render FAPs in buffer<a name="line.168"></a>
<FONT color="green">169</FONT>                            renderAnimation();<a name="line.169"></a>
<FONT color="green">170</FONT>                            <a name="line.170"></a>
<FONT color="green">171</FONT>                            //Check if idle, and do idle behaviour<a name="line.171"></a>
<FONT color="green">172</FONT>                            idleBufferingScheme();<a name="line.172"></a>
<FONT color="green">173</FONT>    <a name="line.173"></a>
<FONT color="green">174</FONT>                            //Sleep to allow other threads to run<a name="line.174"></a>
<FONT color="green">175</FONT>                            try {<a name="line.175"></a>
<FONT color="green">176</FONT>                                    thread.yield();<a name="line.176"></a>
<FONT color="green">177</FONT>                                    thread.sleep(10);<a name="line.177"></a>
<FONT color="green">178</FONT>                            } catch (Exception e) {<a name="line.178"></a>
<FONT color="green">179</FONT>                                    System.out.println("Error while sleeping");<a name="line.179"></a>
<FONT color="green">180</FONT>                                    e.printStackTrace();<a name="line.180"></a>
<FONT color="green">181</FONT>                            }<a name="line.181"></a>
<FONT color="green">182</FONT>                    }<a name="line.182"></a>
<FONT color="green">183</FONT>            }<a name="line.183"></a>
<FONT color="green">184</FONT>    <a name="line.184"></a>
<FONT color="green">185</FONT>    <a name="line.185"></a>
<FONT color="green">186</FONT>            /**<a name="line.186"></a>
<FONT color="green">187</FONT>             *  This method is called when the client starts<a name="line.187"></a>
<FONT color="green">188</FONT>             */<a name="line.188"></a>
<FONT color="green">189</FONT>            public synchronized void startClient() {<a name="line.189"></a>
<FONT color="green">190</FONT>            }<a name="line.190"></a>
<FONT color="green">191</FONT>    }<a name="line.191"></a>
<FONT color="green">192</FONT>    <a name="line.192"></a>




























































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